Home / 31,813.08-43,893.18-19,888.56

Finding the Fourth Proportional to 31,813.08, 43,893.18 and 19,888.56

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Solution

The fourth proportional to 31,813.08, 43,893.18 and 19,888.56 is: 27,440.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,813.08 : 43,893.18 = 19,888.56 : x
  2. Step 2: Convert to fraction form
    31,813.08/43,893.18 = 19,888.56/x
  3. Step 3: Cross multiply
    31,813.08x = 43,893.18 × 19,888.56
  4. Step 4: Simplify right side
    31,813.08x = 872,972,144.02
  5. Step 5: Solve for x
    x = 872,972,144.02/31,813.08
  6. Step 6: Final answer
    x = 27,440.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.